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一、前言 1978年4月至1980年1月子新民县进行了松干蚧(Matsucoccus matsumurae Kuwana)雄蛹、交尾雌成虫、卵在自然变温条件下有效积温的研究。试验是在室外大铁纱养虫笼内进行。松干蚧若虫期很长,发育不整齐,若虫在树皮缝、顶芽及叶鞘基部营固定的寄生生活,虫体很小,饲养和观察都很困难,不适用上述方法试验。因此松干蚧一至二龄若虫有效积温的研究是在不同自然变温条件下进行的。在松干蚧第一代卵孵化盛期(8月下旬),相隔三天,于栽植在试验地里的两株油松上各放一百个卵囊,一小时后取下所有卵囊;在松干蚧越冬代卵孵化盛期(6月上旬),相隔七天,于栽植在花盆里的两株油松上各放一百个卵囊,一小时后取下所有卵囊。当室外月均温低于10℃时,将花盆移进室内,试验继续进行。
I. Introduction From April 1978 to January 1980, a study was conducted in Zixin County on the effective accumulated temperature of male and female pupae and egg of Matsucoccus matsumurae Kuwana at natural temperature. The test is carried out in an outdoor large iron cage. Trichocalycoptera nymphaea period is very long, uneven development, nymphs in bark stings, top buds and leaf sheath base camp fixed parasitic life, parasites is very small, feeding and observation are very difficult, not applicable to the above method test. Therefore, one to two instar nymphs to study the effective accumulation of temperature is in different natural temperature conditions. In the first generation of Pinus kochiae, the egg hatching peak (in late August), separated by three days, each of the two planted in the test ground in each of the 100 oocysts placed one hour after the removal of all oocysts; Overwintering broodstock hatch peak (early June), separated by seven days, placed one hundred oocysts on each of the two pine plants planted in pots, and an hour later all oocysts were removed. When the outdoor monthly average temperature below 10 ℃, the pots moved into the room, the test continued.